Lateral web control



5 Sheets-Sheet l INVENTOR. ADOLPH KUZINSKI BY ATroRA/Ex A KU ZINSKILATERAL WEB CONTROL April 21 1953 Flled Nov 7 1947 A. KUZINSKI LATERALWEB CONTROL April 21, 1953 5 Sheets-Sheet 2 Filed Nov. 7, 1947 INVENTOR.ADOLPH KUZ/NSKI BY/ W)/ ATTORNEY I April 21, 1953 A. KUZINSKI 2,635,326

LATERAL WEB CONTROL Filed Nov. '7, 1947 5 Sheets-Sheet 3 .INVENTOR.ADOLPH KuzmsK! s g gw A TTORN EY April 21, 1953 A. KUZINSKI LATERAL WEBCONTROL 5 Sheets-Sheet 4 Filed Nov. 7, 1947 uvmvrozef ADOLPH KUZINSKIATTORNEY April 21, 1953 A. KUZINSKI LATERAL WEB CONTROL 5 Sheets-Sheet 5Filed Nov. 7, 1947 INVEVTOR.

ADOLPH ATTORNEY Patented Apr. 21, 1 953 UNITED STATES PATENT OFFICE2,635,826 LATERAL WEB CONTROL Adolph Kuzinski, Passaic, N. J.Application November 7, 1947, Serial No. 784,627

2 Claims. 1 The present invention relates to machines for transferring aweb of material from one core or tube onto another.

I In the continuous processing of sheet materials, such as the dyeing offabrics or the printing of wall paper, it is customary to stitch orpaste together successive lengths of material which are thereupon woundinto a roll. For sales purposes, however, it is desirable to rewind eachmanufacturing length of material on an individual tube, this beingconveniently done by means of a machine usually referred to as a tubingma-.

supply roll, means for holding a take-up tube,

and a motorfor driving the latter tube whereby the material will beunwound from the supply roll and wound upon the tube. The workmanoperating the machine has one hand (or his foot) on the control switchwhile with the fingers of the other hand he feels the material in orderto detect the seam at the juncture of two successive lengths. When theseam is reached, he stops the machine, cuts or rips the material at theseam, removes the loaded tube and puts a new tube in its place.Frequently the operator is also required to control manually, e. g. bymeans of a handwheel, the lateral position of the web in order tocompensate for transverse deviations from a predetermined course.

The described position of the operator during the running periods of themachine is fatiguing, as is the continuous vigilance required, thusdetracting from his efficiency in changing the tubes whereby the outputof the machine tends to drop appreciably below its theoretical value.The speed-of his reactions, furthermore, will vary so that the seam willnot always be arrested in the most suitable position, hence eitherrequiring the completion of the winding process by hand or theunwindingof the excess material from the takeup tube.

It is, therefore, an object of the present invention to provide amachine, of the character described, in which the detection of the seamand the stopping of the machine are carried out by fully automaticmeans.

Another object of the invention is to provide a machine, of thecharacter described, in which the lateral control of the web is carriedout by fully automatic means. i

A further object of the invention is to provide, in a machine of thecharacter described, automatic means for lateral web control which maybe adjusted in simple manner for different tolerances.

Yet another object of the invention is to provide, in a machine of thecharacter described,

A still further object of the invention is to pro-' vide, in a machineof the character described, a control circuit of simplified design usingswitching means responsive to alternating current.

Thus the invention, according to certain features thereof, contemplatesthe provision of a tubing machine having means for holding a supplyroll, means for holding .a take-up tube, a motor driving said tube,detector means adapted to stop the motor when the seam is reached,automatic means controlling the lateral position of the web while thematerial is being transferred from the supply roll to the take-up tube,and switch means whereby the operator, having removed the loaded tubeand put a new tube in its place, may re-start the machine whereupon thecycle is repeated automatically.

The above and other features and objects will become more clearlyapparent from the following detailed description, taken in conjunctionwith the accompanying drawing in which:

Fig. 1 is a front view,

F 2 is a side view, and

Fig. 3 is a rear view of a machine according to the invention;

I Figs. 4 and 5 show the seam detecting device in inoperative positionand operative position, respectively;

Fig. 6 is a circuit diagram representing themain control circuit;

Fig. 7 is a circuit diagram representing-an arrangement for the lateralweb control;

Fig. 8 shows the brake and seam detector circuits and gives a moredetailed illustration of 29 lodged in bearings which are formed byacrossbar 3|] and a vertical member 3| of the frame 20, collars 32'serving to prevent any axial displacement of the shaft. Sprockets 24,:25 are fixed to a shaft 33 extending longitudinally of Motor 22 drives,by way of sprock-v the frame 20, said shaft having fixed to its otherend a sprocket 34 connected by a chain 35 to a sprocket 36. Sprocket 36turns a shaft 31 which is formed with peripheral grooves 38 cooperatingwith the teeth of a manually rotatable ratchet 39. Shaft 31 is slidablyheld in a bearing 40 supported by a vertical member 4| of the frame 28.Fig. 1 shows how a take-up tube 42 is mounted between chucks 43, 44provided on the positively driven shafts 29 and 31, respectively. Toremove the tube 42, the ratchet 39 is rota-ted clockwise (as viewed inFig. 1) by means of a crank 45, thereby displacing the shaft 31outwardly. After insertion of a new take-up tube, the crank 45 isrotated counter-clockwise (as viewed in Fig. 1) until the chucks 43, 44are in tight engagement with the ends of the tube, insuring the rotationthereof under the control of motor 22.

Fastened to the frame 20 by any convenient means (not shown) is a plate46, preferably formed by an angle iron, which supports theelectroniccontrol cabinet 41, the auxiliary motor 48 and the gear box49. The cabinet 41 contains the circuit elements subsequently discussedin connection with Figs. 6 and 8. The box 49 houses reduction gearing(not shown) which couples the motor 48 to a gear 50 by way of a pinion5I mounted on the box. A carriage or frame generally indicated at 52comprises a platform 53 to whose underside is secured a verticalblade 54supported on two spaced rollers 55, 56. One of the rollers, e. g. 55, isdriven from the gear 50 over a transmission. system not shown.Thecarriage 52 further comprises depending members 51,, 58 joinedtogether by a horizontal member 59, these members supporting spacedrollers68, 6I engaging a guide rod 62. Also supported on the carriage52, as by brackets 63, 64 secured to the members 51 and 58 thereof, is arod 65 adapted to carry the supply roll 66 (Fig. 2). The rod 65 carriesa brake comprising a disc 61,. ounted on the rod, and a steel band. 68cooperating therewith. The band 68 is fixedat one point, as at 69, to abracket I0 secured to member 58 and is attached at another point, I I,to the armature of a solenoidIZ which is also secured to the, member. 58by means of a plate I3...

Carried on the platform 53 of a carriage 52 are a measuring roller I4,two tension rollers I5, I6

able means, such as crossbars (only one shown), on the frame 20, nextaround the roller I5 and finally around the measuring roller I4whereupon it is taken up by the tube 42. The measuring roller I4, havinga knurled surface as shown in Figs. I and 3, is entrainedby the web I8andactuates a counting device 8 I which meas ures the number ofrevolutions of roller I4 and, thereby, the length of the materialpassing through the machine. The device 8| may be of any knownconstruction.

Mounted on a rod 82, which may be supported in similar manner astheroller I9, is the scanning apparatus 83 comprising a source of light 84'and two photocells 85, 86. The apparatus 83 is located adjacent theright-hand edge of the web 18', as viewed in Fig. 1, and its angularposition on the rod 82 is adjustable as by means of a set screw 81. Arotation of the'ap'paratus 83' about the rod 82 will result in varyingthe sensitivity of the apparatus with respect to lateral deviations ofthe 4 web as will subsequently become clear from a description of thecircuit diagram of Fig. '7.

The micro-switch 11 represents the seam detector mentioned above and itsmechanical features are shown in detail in Figs. 4 and 5. A rod 88 issupported on the platform 53 by means of brackets 89, 90 (Fig. 3). Therod 88 carries the body 9| which may be of any convenient form, e. g.may be drum-shaped as shown in the drawing. (It will be understood thatboth the angular and the axial position of the drum onthe rod 88 arefixed.) Rising from the body 9| are an arm 92 supporting a metal plate93, an arm 94 having pivoted thereon the switch box 95, and an arm 96carrying an adjustable screw 97. The

box carries externally a button 98 and a switch latter contacts are in afirst position when the switch is at rest, as, in Fig. 4, or when thearm 99 rides lightly on the material I8 as determined.

by the adjustment. of screw9'I. If now, in the position illustrated inFig. 5, a seam shouldpass betweenthe'roller I6 and the switch arm 99,.the. latter will be lifted slightly, thus being displaced with respectto the box 95 which is seated on the This relative movement of the arm'screw. 97$. 99 will throw the internal contacts of the switch into asecond position as will be more fully described hereinafter withreference to the circuit diagram of Fig. 8.

The contents of the control cabinet 4! are illustrated diagrammaticallyin Fig. 6. The cabi-' net has nineteen terminals I-I9 to the first twoof which power is supplied externally from alternating current mains,not shown. A master switch I00 connects the conductors IOI, I02extending fromthese terminals to conductors I03, I04. forming a pair ofauxiliary bus bars. Conductors I83, I04 are connected. to the terminals3 and 4', respectively. In similar manner, conductors I05 through I I9.are connected to respective terminals 5 through I9. v I Connected inparallel between the bus bars I03 and I041 are the primaries of a mainor plate transformer I20 and four auxiliary or heater ..transformersI2I, I22, I23, I24. The secondary of transformer I2! supplies heatercurrent to the filaments of two thyratrons I25, I26 forming a firstfull-wave rectifier IZ'I. The secondary of transformer I22 suppliesheater currentto the filament of a second full-wave rectifier I 28 shownas a double diode. The secondaries of transformers I23 and I24 inparallel supply heater current to the filaments of two thyratrons I29, I39 representing a third full-wave rectifier I3I. The output of rectifierI2'I is controlled by-a potentiometer I32, serving to shift the phase ofthe grid voltage applied to the thyratrons. I 25, I26 from conductorsI03, I04 by way of 'transformers I33, I34; the potentiometer I32 formspart of a reactive coupling circuit which includes a condenser I35 andconnects the secondary of transformer I 33 to the primary of transformerI34. The output of rectifier I3I is controlled in analogous manner by apotentiometer I36 which is in series with a condenser I3I, connectedbetween the windings of two transformers I38, I39 wgicnazerve toenergize the grids of thyratrons The plates of thyratrons I25 and I29and the left-hand plate of double diode I28 are connected to theleft-hand terminal of the secondary of main transformer I20, with theremaining rectifier plates connected to the right-hand terminal thereof.A plate switch I40, when thrown, serves to extend the conductor I01 tothe center tap of this secondary so as to make this conductor the commonplate lead for all the rectifiers. As the conductor I06 is connected tothe center tap of the secondary of transformer I22, this conductorrepresents the cathode return for rectifier I28 which therefore will beconnected between terminals 6 and 1 as soon as both the main switch Iand the plate switch I40 are closed. From a glance at Fig. 9, it will beseen that the two shunt windings I4I, I42 of motor 22 are connected inseries between terminals 6 and 1 so that these two windings will beenergized as soon as the said switches are thrown.

Referring briefly to Fig. 8 wherein the switch box 95 and adjoiningparts have been shown in dotted lines, it will be seen that the metalplate 93 and the button 98 are connected to terminals I9 and I0,respectively, by way of conductors II9a and H811. Thus, these twoterminals will be short-circuited when the box 95 is in its upturnedposition as in Fig. 4. The switch arm 99 controls an armature I43 inswitch box 95, said armature I43 being connected to a conductor I I6aand thereby normally short-circuits the terminals I6 and I1 over a backcontact connected to a conductor II1a; when the switch arm is actuated,however, this short circuit is broken and the armature I43short-circuits, instead, the terminals I and I6 over a front contactconnected to a conductor II5a.

A main relay I44, Fig. 6, has its winding connected to conductor I I1over a back contact of an interrupter relay I45. Since, in the normalcondition of the micro-switch 11 (box 95 turned down, arm 99unactuated), terminals I1 and I6 are short-circuited as described above,the circuit of relay I44 will be extended over conductor I I 6 to busbar I04. Bus bar I03 may be connected to the winding of relay I44 by theclosure of a push button I46, by way of a circuit breaker I41 which mayalso be in the form of a push button. Relay I44 thereupon energizes andlocks over a front contact associated with the middle one of its threearmatures, indicated at I48. Armature I48 also extends the bus bar I03to the movable arm of a three way switch I94.

A forward relay I50 and a reverse relay I 5I have their windingsconnected in parallel to the bus bar I04. Switch I49, as shown in Fig.8, is arranged to complete either the energizing circuit for relay I50over its right-hand contact I52 or the energizing circuit for relay I5Iover its lefthand contact I53. (These connections have not beencompleted in Fig. 6 so as not unduly to complicate the drawing.)Operation of the forward relay I50, for example, energizes the armatureA and the series windings I54, I55 of motor 22 (Fig. 9) over a circuitwhich can be traced from plate terminal 1 through winding I 54 toterminal 8, thence over conductor I08, armature I56 and front contact ofrelay I50, conductor I I0 to terminal I0, via armature A to terminal 9,over conductor I09, front contact and armature I51 of relay I50, frontcontact and armature I58 of relay I44 and conductor I I I to terminal II and through Winding I55 to terminal I2. Conductor I I2 is connected tothe center taps of the secondaries of transformers I23 and I24 inparallel, thus completing the circuit through rectifier I3I. If thereverse relay I5I had operated, the circuit would have run from terminal8 over conductor I08 to the armature I59 and front contact of relay I5I,thence via conductor I09, terminal 9, armature A (with the currentflowing in a direction opposite as before to terminal I0 and overconductor I I0, front contact and armature I60 of relay I5I, frontcontact and armature I58 of relay I44 and conductor III to terminal I I,the remaining connections being identical.

The position of the three-way switch I49 will thus determine the senseof rotation of motor 22 whereby the material may be wound upon thetake-up tube 42 in either a clockwise or a counterclockwise direction asdesired.

When "the relay I44 was energized, its armature I 6I extended over afront contact the conductor I05 to the cathode'return of rectifier I21at the center tapof the secondary of transformer I2I. Thus there wasprepared an energizing circuit for the auxiliary motor 48 as will beseen from Fig. '7.

Fig. '1 illustrates the operation of the marginal control 83. Connectedbetween the conductors I 03a and Ma, which extend from terminals 3 and4, are the primaries of three step-down transformers I62, I63 and I64.Transformer I62 energizes the lamp B4. Transformer I63 forms part of anenergizing circuit for a relay I65, said circuit also including thephotocell and a gas filled tetrode I66. Transformer I64, photocell 86and gas filled tetrode I61 are included in a similar energizing circuitfor a relay I68. Since the two energizing circuits are identical, onlyone of them will be discussed in detail. Transformers. I63 and I64supply heater current to the tetrodes I66 and I61, respectively.

' The plate of tetrode I66 is connected to the terminal 4 over thewinding of relay I65, a resistor I69 in series therewith and a conductorI041). The series combination of relay I65 and resistor I69 is shuntedby a condenser I10. In an actual embodiment the magnitude of resistorI69 was 2500 ohms and the capacity of condenser I10 was 4microfarads,these values as well as others indicated on the drawing being givenmerely by way of illustration and not limitation. The load circuit oftetrode I66 is completed by a connec tion between the cathode thereofand the terminal 3 which includes a resistor HI and the conductor I03a.A very large resistor I12, designed as a voltage divider, is shuntedacross the oath-- ode-anode circuit of tube I66.

The cathode of tetrode I 66 is coupled through a condenser I12 to thecontrol grid I13 of that tube and is galvanically connected to thesecond grid I 14 thereof. Grid I13 is directly connected to the anode ofphotocell 85 and is also connected, by way of anode resistor I15 shuntedby condenser I16, to the slider of a potentiometer I11 bridged acrossthe secondary of transformer I63. The cathode of photocell 05 isconnected to the intermediate terminal of voltage divider I 12. ResistorI'll also serves to connect one terminal of the primary winding oftransformer I63 to a corresponding terminal of the secondary windingthereof, the coupling between the two windings being arranged in such away that the plate potential and the control grid potential of tube I66will be substantially in phase.

As long as the photocell 85 is non-conductive, the voltage on thecontrol grid of tube I66 will rise sufficiently during each positivehalf-cycle to ignite the tube, thereby causing the flow of a pulsatingcurrent which will charge the condenser I10 and, after an intervaldetermined by the time constant of the elements I69, I10 will energizethe relay I55. If, however, the photocell 85 is excited and becomesconductive, the voltage drop across the anode resistor I15 will lowerthe potential on grid I13 during positive half-cycles so that the tubeI66, having, been de-energized during a negative half-cycle will notreoperate whereupon relay I'65 releases.

The normal position of the web I8, with respect to the light source 84and the photocells, 85 and 3B is as indicated in Fig. 7: by a dot-dashline with the arrowheads indicating the possible displacement of theweb. Thus, under normal conditions, the light will impinge on thephotocell 86 but will be cut off from the cell 85. This means that relayI65 will be operated while relay I68 will be at rest and none of thewindings I18, I'I9 of motor 46 will be energized. Suppose, now, that theweb I8 shifts in such a manner (upward in Fig. 7 that light may fall onthe cell 85. Relay I65 will release and a circuit will be closed fromterminal 5 over conductor I05a, armature and back contact of relay I65,winding I18 and armature A of motor 48, conductor IBM to terminal I.This energizes motor 48 in one sense of rotation whereby the position ofthe web will be restored. If, however, the web' deviates in the oppositedirection (downward inv Fig. 7), the photocell 35 will becomenon-conductive and relay I68 will operate, closing an obvious circuitthrough armature A and winding I19 of motor 48' which thereupon rotatesin the reverse sense, likewise restoring the web I8 to its normalposition.

From an inspection of Fig. 7 it willalso be clear how a rotation of thescanning device 83 about the rod 82 (Fig. 2) varies the limits withinwhich the web 18 may be laterally displaced without effecting theoperation of motor 48. Thus it will be'seen that clockwise rotation ofthe apparatus 83 as viewed in Fig. 2 will have the effect of increasingthe distance between the web 13 and the source of light 84 whilebringing the web closer to the photocells 85, 86. In this position thetolerance will be greater since a wider linear displacement of the edgeof the material within the limits of the triangle 84, 85, 86 will bepossible. Conversely, a counter-clockwise rotation of the apparatus 83about the rod 82, as viewed in Fig. 2, will decrease the tolerance byplacing the web 18 closer tothe lamp 84. In this simple manner thedesired degree of margin control may be conveniently selected.

Connected across the bus bars I03, I04 (Figs. 6-and 8) is a step-downtransformer I80 which supplies low-voltage alternating current toconductors IIB and H9; The transformer also provides heater current foran amplifier I8I, shown as a tetrode in Fig. 8. The relay I45,previously referred to, is a low voltage relay in series with conductorI I 8 which becomes energized when the contacts 93, 98 are closed. RelayI45 opens the operating circuit of the main relay I44 which thereforecannot be energized when the switch box 95 is in its. upturned positionas shown in Fig. I. At the same time a circuit through an alarm lamp I32will be closed: Conductor I03, lamp I82, front contact and armature ofrelay I45, conductor II'I, terminal I'I', conductor IIIa, back contactand armature I43 of switch 11, conductor IIBa, terminal 65, conductorH6, conduc tor I04. This will advise the operator that the machine isnot in condition to function and will cause him to lower the switch box95, whereupon the relay I45 will become tie-energized, relay I44 8 willoperate and'la'mp' I82 will be extinguished.

At this. point it may be well to note that the micro-switch II ispreferably of a type in which the armature I43 is tripped by the arm 99so as to remain in actuated position until manually rcstored to normal.In this case, since the energizing circuit for the main relay I44 leadsover the back contact and armature of the switch, it will not bepossible to start the machine with the'armature I43 oir normal and thealarm lamp I82 will be lit over a circuit which includes conductors H5and 5a, front contact and armature I43 of switch TI, conductor II'oa'andconductor H6.

The load circuit of amplifier tube I8! extends from the cathode thereofover a back contact and" armature I48 of relay I44 to the bus bar I94and from bus bar I53 by way of a relay I83 to the plate of the tube.Relay I83 is in series with a resistor I84 and is shunted by a condenser I85, the arrangement representing a time delay circuit similar tothe circuit #652, I'EU, of Fig. '7. Two very large resistors I86 andI87, the latter designed as a potentiometer, are connected across thebus bars I 03 and I84, the control grid I88 of tube I8! being connectedto the slider of potentiometer I3? by way of a condenser I89 and gridleak I535. The second grid I9i of tube I 8| is connected to the platethereof. A large resistor I 92 is bridged across the tube as i-=.customary.

It will be seen that tube I8I will be energized assoon as the masterswitch Itfl has been closed and as long as the relay I44 remainsunoperated. It. Will also be seen that an energizing circuit for thesolenoid I2 of the brake described in connection with Fig. 2, shown hereschematically as an impedance, leads from conductor I04 over conductorII4, terminal I4, conductor II4a, solenoid' I2, conductor IiBa, terminal53, conductor II3, back contact and armature I93 of relay I5I, backcontact and armature I54 of relay I59, back contact and armature ofrelay I83 to the conductor I93. Thus, when the switch It!) is initiallythrown, the solenoid '22 will be energized over the circuit described;at the same time, however, the vacuum tube I3I will conduct pulsatingdirect current,'charging the condenser I and eventually operating therelay I83 which opens itsback contact de-energizing the solenoid i2 andreleasing the brake. The period during which the brake is applied willbe determined by the time constant of the circuit elements I84, I85.

The operation of the arrangement described is as follows: Let us assumethat the machine has been running for a while, thus the condenser I85 iscompletely discharged. The main relay I44 is energized as is one of thestart relays I55, I5I. Accordingly, although the circuit of solenoid I2is closed at the armature of relay I83, it will be open either at thearmature E93 or at the armature I94. Suppose, now, that the relay I44 ismomentarily de-energized; this may happen as a result of an actuation ofthe switch arm 99 or upon manual depression of the release button I41 bythe operator whereby the holding circuit of the relay will'b'e opened.Relay I56 or I5I (whichever had been energized) is relcased at armatureI48, thereby closing the operating circuit for the solenoid I2 so thatthe brake is applied to the shaft 65 carrying supply roll 65. At thesame time the release of the start relay de-energized motor 22 while thecircuit of motor 48 is open at the armature I6I. The tube I8! becomesconductive, energizing in due time the relay I83 whereupon the brake isreleased and the machine is ready to be started up anew.

It will thus be seen that by the present invention I have produced amachine which is fully automatic to the extent that the operator needattend only to the changing of the take-up tubes and supply rolls and tothe starting of the machine. The invention, however, is not limited tothe particular embodiment described and illustrated; thus thearrangement need not be used for the detection of seams but may beutilized to detect other variations in the thickness of a web ofmaterial, in such a manner that the machine will be arrestedautomatically when either abnormally thick or (with obviousmodifications of the switch 71) abnormally thin portions of material areencountered. Various other adaptions and modifications may be made bypersons skilled in the art without exceeding the spirit and scope of theinvention as defined in the objects and in the appended claims.

I claim:

1. In a tubing machine of the character described the combination of aframe; a motor driven tubing spindle adjustably mounted in said frame; aplurality of rollers rotatably mounted upon said frame; a second framemounted upon said rollers supported by said first frame; a second motordrive mounted upon said first frame and coupled to one of said rollerscarrying said second frame, whereby said second frame may be driven backand forth parallel to the axis of said tubing spindle; a supply rollrotatably mounted upon said second frame; a web of material to be tubedstretched from said supply roll to said tubing spindle; a plurality ofguide rolls rotatably mounted in contact with said web between saidsupply roll and said tubing spindle; a pair of photo-electric cellsmounted on said first frame near an edge of said web; a light sourcemounted on the other side of said web, in line with the edge of same,said light source being placed in such a position relative to said webthat only one of said photo-electric cells is illuminated when the webis in its normal position, and electric control apparatus operated bysaid photo-electric cells whereby said second motor drive is actuatedand whereby said supply roll and said web may be kept in proper relationto said tubing spindle.

2. A tubing machine as described in claim 1 where said pair ofphoto-electric cells and said. light source are adjustably mounted upona.

transverse member in said first frame whereby said photo-electric cellsand said light source may be set to control the tubing of webs ofvarious widths.

ADOLPH KUZINSKI.

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